diff --git a/deno.json b/deno.json
new file mode 100644
index 0000000..bcdf28b
--- /dev/null
+++ b/deno.json
@@ -0,0 +1,34 @@
+{
+  "name": "@serve.zone/nupst",
+  "version": "4.0.0",
+  "exports": "./mod.ts",
+  "tasks": {
+    "dev": "deno run --allow-all mod.ts",
+    "compile": "deno task compile:all",
+    "compile:all": "bash scripts/compile-all.sh",
+    "test": "deno test --allow-all tests/",
+    "check": "deno check mod.ts",
+    "fmt": "deno fmt",
+    "lint": "deno lint"
+  },
+  "lint": {
+    "rules": {
+      "tags": ["recommended"]
+    }
+  },
+  "fmt": {
+    "useTabs": false,
+    "lineWidth": 100,
+    "indentWidth": 2,
+    "semiColons": true
+  },
+  "compilerOptions": {
+    "lib": ["deno.window"],
+    "strict": true
+  },
+  "imports": {
+    "@std/cli": "jsr:@std/cli@^1.0.0",
+    "@std/fmt": "jsr:@std/fmt@^1.0.0",
+    "@std/path": "jsr:@std/path@^1.0.0"
+  }
+}
diff --git a/mod.ts b/mod.ts
new file mode 100644
index 0000000..8259be1
--- /dev/null
+++ b/mod.ts
@@ -0,0 +1,44 @@
+#!/usr/bin/env -S deno run --allow-all
+
+/**
+ * NUPST - UPS Shutdown Tool
+ *
+ * A command-line tool for monitoring SNMP-enabled UPS devices and
+ * initiating system shutdown when power conditions are critical.
+ *
+ * Required Permissions:
+ * - --allow-net: SNMP communication with UPS devices
+ * - --allow-read: Read configuration files (/etc/nupst/config.json)
+ * - --allow-write: Write configuration files
+ * - --allow-run: Execute system commands (systemctl, shutdown, git, bash)
+ * - --allow-sys: Access system information (hostname, OS details)
+ * - --allow-env: Read environment variables
+ *
+ * @module
+ */
+
+import { NupstCli } from './ts/cli.ts';
+
+/**
+ * Main entry point for the NUPST application
+ * Parses command-line arguments and executes the requested command
+ */
+async function main(): Promise<void> {
+  const cli = new NupstCli();
+
+  // Deno.args is already 0-indexed (unlike Node's process.argv which starts at index 2)
+  // We need to prepend placeholder args to match the existing CLI parser expectations
+  const args = ['deno', 'mod.ts', ...Deno.args];
+
+  await cli.parseAndExecute(args);
+}
+
+// Execute main and handle errors
+if (import.meta.main) {
+  try {
+    await main();
+  } catch (error) {
+    console.error(`Error: ${error instanceof Error ? error.message : String(error)}`);
+    Deno.exit(1);
+  }
+}
diff --git a/ts/cli.ts b/ts/cli.ts
index 1692985..b8c481e 100644
--- a/ts/cli.ts
+++ b/ts/cli.ts
@@ -1,6 +1,6 @@
-import { execSync } from 'child_process';
-import { Nupst } from './nupst.js';
-import { logger } from './logger.js';
+import { execSync } from "node:child_process";
+import { Nupst } from './nupst.ts';
+import { logger } from './logger.ts';
 
 /**
  * Class for handling CLI commands
diff --git a/ts/cli/group-handler.ts b/ts/cli/group-handler.ts
index 481043d..9790c41 100644
--- a/ts/cli/group-handler.ts
+++ b/ts/cli/group-handler.ts
@@ -1,7 +1,7 @@
-import { Nupst } from '../nupst.js';
-import { logger } from '../logger.js';
-import * as helpers from '../helpers/index.js';
-import { type IGroupConfig } from '../daemon.js';
+import { Nupst } from '../nupst.ts';
+import { logger } from '../logger.ts';
+import * as helpers from '../helpers/index.ts';
+import { type IGroupConfig } from '../daemon.ts';
 
 /**
  * Class for handling group-related CLI commands
diff --git a/ts/cli/service-handler.ts b/ts/cli/service-handler.ts
index 32c3512..398521b 100644
--- a/ts/cli/service-handler.ts
+++ b/ts/cli/service-handler.ts
@@ -1,6 +1,6 @@
-import { execSync } from 'child_process';
-import { Nupst } from '../nupst.js';
-import { logger } from '../logger.js';
+import { execSync } from "node:child_process";
+import { Nupst } from '../nupst.ts';
+import { logger } from '../logger.ts';
 
 /**
  * Class for handling service-related CLI commands
diff --git a/ts/cli/ups-handler.ts b/ts/cli/ups-handler.ts
index 70c4754..cd6580c 100644
--- a/ts/cli/ups-handler.ts
+++ b/ts/cli/ups-handler.ts
@@ -1,7 +1,7 @@
-import { execSync } from 'child_process';
-import { Nupst } from '../nupst.js';
-import { logger } from '../logger.js';
-import * as helpers from '../helpers/index.js';
+import { execSync } from "node:child_process";
+import { Nupst } from '../nupst.ts';
+import { logger } from '../logger.ts';
+import * as helpers from '../helpers/index.ts';
 
 /**
  * Class for handling UPS-related CLI commands
diff --git a/ts/daemon.ts b/ts/daemon.ts
index 697ef04..2413d17 100644
--- a/ts/daemon.ts
+++ b/ts/daemon.ts
@@ -1,10 +1,10 @@
-import * as fs from 'fs';
-import * as path from 'path';
-import { exec, execFile } from 'child_process';
-import { promisify } from 'util';
-import { NupstSnmp } from './snmp/manager.js';
-import type { ISnmpConfig } from './snmp/types.js';
-import { logger } from './logger.js';
+import * as fs from "node:fs";
+import * as path from "node:path";
+import { exec, execFile } from "node:child_process";
+import { promisify } from "node:util";
+import { NupstSnmp } from './snmp/manager.ts';
+import type { ISnmpConfig } from './snmp/types.ts';
+import { logger } from './logger.ts';
 
 const execAsync = promisify(exec);
 const execFileAsync = promisify(execFile);
diff --git a/ts/helpers/index.ts b/ts/helpers/index.ts
index 61ed984..a881777 100644
--- a/ts/helpers/index.ts
+++ b/ts/helpers/index.ts
@@ -1 +1 @@
-export * from './shortid.js';
\ No newline at end of file
+export * from './shortid.ts';
\ No newline at end of file
diff --git a/ts/index.ts b/ts/index.ts
index 30824a2..a1d0ac2 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
-import { NupstCli } from './cli.js';
-import { logger } from './logger.js';
+import { NupstCli } from './cli.ts';
+import { logger } from './logger.ts';
 
 /**
  * Main entry point for NUPST
diff --git a/ts/nupst.ts b/ts/nupst.ts
index 3d80cdd..741eba2 100644
--- a/ts/nupst.ts
+++ b/ts/nupst.ts
@@ -1,12 +1,12 @@
-import { NupstSnmp } from './snmp/manager.js';
-import { NupstDaemon } from './daemon.js';
-import { NupstSystemd } from './systemd.js';
-import { commitinfo } from './00_commitinfo_data.js';
-import { logger } from './logger.js';
-import { UpsHandler } from './cli/ups-handler.js';
-import { GroupHandler } from './cli/group-handler.js';
-import { ServiceHandler } from './cli/service-handler.js';
-import * as https from 'https';
+import { NupstSnmp } from './snmp/manager.ts';
+import { NupstDaemon } from './daemon.ts';
+import { NupstSystemd } from './systemd.ts';
+import { commitinfo } from './00_commitinfo_data.ts';
+import { logger } from './logger.ts';
+import { UpsHandler } from './cli/ups-handler.ts';
+import { GroupHandler } from './cli/group-handler.ts';
+import { ServiceHandler } from './cli/service-handler.ts';
+import * as https from "node:https";
 
 /**
  * Main Nupst class that coordinates all components
diff --git a/ts/snmp/index.ts b/ts/snmp/index.ts
index e42119a..41d35b5 100644
--- a/ts/snmp/index.ts
+++ b/ts/snmp/index.ts
@@ -4,7 +4,7 @@
  */
 
 // Re-export all public types
-export type { IUpsStatus, IOidSet, TUpsModel, ISnmpConfig } from './types.js';
+export type { IUpsStatus, IOidSet, TUpsModel, ISnmpConfig } from './types.ts';
 
 // Re-export the SNMP manager class
-export { NupstSnmp } from './manager.js';
\ No newline at end of file
+export { NupstSnmp } from './manager.ts';
\ No newline at end of file
diff --git a/ts/snmp/manager.ts b/ts/snmp/manager.ts
index 22a607c..1d9ae84 100644
--- a/ts/snmp/manager.ts
+++ b/ts/snmp/manager.ts
@@ -1,6 +1,6 @@
-import * as snmp from 'net-snmp';
-import type { IOidSet, ISnmpConfig, TUpsModel, IUpsStatus } from './types.js';
-import { UpsOidSets } from './oid-sets.js';
+import * as snmp from "npm:net-snmp@3.20.0";
+import type { IOidSet, ISnmpConfig, TUpsModel, IUpsStatus } from './types.ts';
+import { UpsOidSets } from './oid-sets.ts';
 
 /**
  * Class for SNMP communication with UPS devices
diff --git a/ts/snmp/oid-sets.ts b/ts/snmp/oid-sets.ts
index cb6174a..86d07e8 100644
--- a/ts/snmp/oid-sets.ts
+++ b/ts/snmp/oid-sets.ts
@@ -1,4 +1,4 @@
-import type { IOidSet, TUpsModel } from './types.js';
+import type { IOidSet, TUpsModel } from './types.ts';
 
 /**
  * OID sets for different UPS models
diff --git a/ts/systemd.ts b/ts/systemd.ts
index 88c7813..574dd00 100644
--- a/ts/systemd.ts
+++ b/ts/systemd.ts
@@ -1,7 +1,7 @@
-import { promises as fs } from 'fs';
-import { execSync } from 'child_process';
-import { NupstDaemon } from './daemon.js';
-import { logger } from './logger.js';
+import { promises as fs } from "node:fs";
+import { execSync } from "node:child_process";
+import { NupstDaemon } from './daemon.ts';
+import { logger } from './logger.ts';
 
 /**
  * Class for managing systemd service